Self-playing attachment for musical instruments.



Pat'ented -May 27, |902.

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INVENTDR j] l I @JW /ff TT RNEY H. M. SALYER.

(Applieanion med Apr. 27, i901.)

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SELF PLAYINGATTACHMENT FOR MUSICAL INSTRUMENTS.

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No. 700,829. Patented May 27, |902.

H. M. SALYER. A

SELF PLAYING ATTACHMENT FOR MUSICAL INSTRUMENTS.

(Application filed Apr. 27, 1901.)

5 Sheets-Sheet 2 (No Model.)

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No. 700,829. Patented May 27, |902.

H. M. SALYEH.

SELF`PLAYING ATTACHMENT FOR MUSICAL TNSTBUMENTS.

(Application led Apr. 27, 1901.)

5 Sheets-Sheet 3l (No Model.)

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No. 700,829. Patented May 27, |902.

H. M. SALYER.

SELF PLAYING ATTACHMENT FOR MUSICAL INSTRUMENTS.

(Application led Apr. 27, 1901.)

(No Model.) '5 Sheets-Sheet 4.

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No. 700,829. Patented May 27, i902. H. M. SALYER.

SELF PLAYING ATTACHMENT FOR MUSICAL INSTRUMENTS` (Application filed Apr.27, 1901.)

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UNITED STATES PATENT OEEICE.

HARRY M. SALYER, OF NEYV YORK, N. Y., ASSGNOR TO THE FIRM OF LUDVIG ANDCOMPANY,

OF NEV YORK, N. Y.

SELF-PLAYING ATTACHMENT' FOR MUSICAL lSTRUNIENTS.

GPECXFCATION forming part of Letters Patent No. 700,829, dated 'May 27,1902. Application filed April 27, 1901. Serial No. 57,7911. (No model.)

T all whom, `t may concern.-

Be it known that I, HARRY M. SALYER,a citi- Zen of the United States,and a resident of the city of New York, borough of the Bronx, in thecounty of New York and State of 'New York, have invented certain new anduseful Improvements in Self-Playing Attachments for Musical Instruments,of which the following is a speciiication.

This invention relates to improvements in automatic playing attachmentsfor musical instruments; and the object ot my invention is to provide anew and improved attachment of this kind which is simple inconstruction, strong and durable and reliable, and very effeetive inuse.

ln the accompanying drawings, in which like letters of referenceindicate like parts in all the figures, Figure 1 is a front elevation ofmy improved automatic playing attachment, parts being in section andothers broken away and some omitted. Fig. 2 is a vertical longitudinalsectional view through one of the pneumatic key-striker-actuatingmechanisms with its valves. Fig. 3 is a vertical longitudinal sectionalview through the compressedair-controlling valve. Fig. 4 is a detailview of the suction-controlling valve. Fig. 5 is a vertical transversesectional view on the line 5 5 of Fig. 1. Fig. 6 is an enlarged detailelevation of the mechanism for reversing the music or note sheet rollinggear and controlling the admission of motive power to the variouspneumatic mechanisms in the attachment, parts being in section. Fig. 7is a plan view of the same, parts being in section. Fig. Sis an enlargeddetail elevation of the note-sheetrolling gear, parts being in section.Fig. 9 is a side view of the same, parts being in section. Fig. 10 is avertical transverse sectional view through the bridge or tracker-bar.Fig. 11 is a sectional view of the same on the line 11 11 of Fig. 10.Fig. 12 is an enlarged sectional view of the three-way cock. Fig. 13 isa plan view of a modification of certain parts. Fig. 111 is a detaillongitudinal sectional view of the note-sheet roller. Fig. 15 is adetail View of the tubes to the controllers. Fig. 1G is a longitudinalsectional view ofthe tracker- 5o bar and parts connected therewith. Fig.17

is a vertical transverse sectional view of the same.

The keys A and A', Fig. 5, of the keyboard are actuated by key-strikersplaced above them, and each key-striker has a rod A2, the upper end ofwhich is rested against a diaphragm A3, held in a casing A4, in thebottom of which said rod A2 is guided. The rod A2 is pressed against thediaphragm A3 by a helical spring A, surrounding the rod. The upper endot the casing Al1 has a duct A, through which compressed air can beadmitted into the top of the casing A" above the diaphragm A3 to forcedown the latter and the rod A2. Valve meehanisms,which will be describeddirectly, govern the admission of compressed air.

Pneumatic mechanisms such as first described. are used for various otherpurposes in my improved automatic playing attachment and will bereferred to hereinafter as pneumatic mechanism. Each pneumaticmechanism, whether used for operating akeystriking rod or otherwise, hasthe top of its casing AA1 connected with a block AT, in which the ductAG is formed, and this duct leads to a large horizontal bore AS in theblock A7, and at each end of this bore a valve-seat is formed for thevalves AU and A10 on opposite ends of a stem Au in said bore. The blockA7 is located between two air-ehambers B and C, the former containingcompressed air and the latter air rarefied to a greater or less degree.A hollow plug B' is screwed through the chamber B at each pneu matiekey-operating mechanism and is in co minunication with the chamber B,and its inner open end, communicating with the block A7, can be closedby a valve B2 on a stem B3, secured at its opposite end to a diaphragmB4, held by a cap B5 on the outer end of the plug B. This cap B5, Fig.2, is connected with tubes B for conveying compressed air to thediaphragm and pressing it to the left for the purpose of opening thevalve B2 to a greater extent, so as to admit more compressed air thanusually to the pneumatic mechanism, such tubes extending to suitablecontrollers K', which need not be described in detail7 as they form nopart of the present invention. The tubes B6 and plugs B are providedonly for those pneumatic IOC mechanisms that are used for operating keyustrikers. Vthenever the Valve A111 is lifted olt' its seat andcommunication thus established between the top of the easing A'1 and theinner end of the corresponding plug D', the air-pressure in the chamberB can force the valve B2 olf its seat, permitting the compressed air topass into the top of the casing A4 and to act on the diaphragm A3 andcontinue so to act as long as the valve A10 is held open.

At each pneumatic mechanism a hollow plug C is passed through thechamber C and is in communication therewith and terminates at its outerend in a cup C2, in which a diaphragm C3 is held by a cap G1, from whicha tube C5 extends to a tracker-board O. A stem C1; is mounted to slidelongitudinally in the plug C', and one end, provided with a suitablehead, rests against the diaphragm C2, and the other end rests against adiaphragm C7, secured in the cup C2, formed on the block A7, and againstthis diaphragm C1 an extension C2 of the valvestem A11 rests.

C10 is a vent-opening in the cup CS.

Vhenever the tube C?y is opened by a hole in the note-sheet a, movedover the trackerbar O, as will be set forth hereinafter, atmospheric-airpressure can act on the diaphragm C3 and force the same to the right,Fig. 2, as a much-reduced pressure exists in the chamber C and cup C2,and thereby the diaphragm C7 and the stem A11 are forced to the right`and the valve A9 is seated and the valve A10 unseated. The compressedair can now act on the diaghragm A"1 in the casing A", as herein beforestated. When the valves A and A10 are again brought into the positionsshown in Fig. 2, the air can escape from the casing A1 through the ductA and vent C10, when the diaphragm A3 is forced up by its spring A5. Thecontrollers are each connected with the pneumatic mechanism for the keysof like denomination in each octave and also with the pneumaticmechanism of the keys which are usually not played with thefirst-mentioned keys, and each controller has a d uct .leading to thetracker-bar. lVhenever a hole in the note-sheet registers with a ductleading to a controller, the'valves B2 of all valve mechanisms connectedwith the controller will be affected in the manner previously described;but this will have effect only in such pneumatic mechanisms in which thevalve A111 has been opened at the same time. The compressed air ispreferably stored in a tank D, Fig. 5, and may be produced by foot-poweror any suitable motor. lt is conducted through a tube D', which isscrewed into a neck D5 of a governing valve-casing D2. The casingD2has apartition D11, from which a hub D1 projects downward, and in the saidhub a chamber DG is fo 1ined, which is open at the bottom and is incommunication with the neck D5. The open end of the chamber DG can beclosed by a valve D7, secured on a stem DS, passing longitudinallythrough the hub D1 and secured at its upper end to a diaphragm D, heldon the top of the casing D2 by a cap D12, having a neck D11. A duct D12in the valve-stein ADS establishes communication between the space aboveand below the diaphragm D11, and this duct can be adjusted in size by ascrew D1S in said stem. A hole D11 in the partition connects the spacebelow the diaghragm D11 with the neck D5. A tube D15 is screwed into aneck D1, which is in communication with the lower part of the casing D2,and said tube D15 conducts the conn pressed air to the various pneumaticmechanisms to be operated by compressed air. Then the neck D11 or a tubeconnected with the same is closed, so that the compressd air cannotescape, the same air-pressure exists on both sides of the diaphragm D,and thus the valve D7 is held in equilibrium, and the downward pressureof the compressed air on the valve is sufficient to open it, thuspermitting Vhe compressed air to pass into the tube D15. `\fVhenevertheneck D11 ora tube (Z2, connected with the same, is opened by opening acock W, connected with said tube, the compressed air can readily escapefrom above the diaphragm D", and the now greater pressure on the underside et' the diaphragm holds the valve D7 closed.

An exhaust-bellows E or analogous device is connected with asuction-tube E3 and with a discharge-tube E, and said suction-tube isconnected with a valve-casing E2, which is constructed like thevalve-casing D2 and has a valve El1 arranged in a like manner, with thedifference, however, that a downward extension E5 of the valvestem restsupon a diaph ragm E11, secured on the bottom of the casing E over a holeET in said casing E2. As long as the neck in the top of the casing E2 ora tube connected with said neck remains closed the valve El remains inequilibrium, as the airpressure on both sides of the diaphragm in theeasing E2 is the same. VheneVer the neck in the top of the casing E2 orthe tube connected therewith is open to the atmosphere, the air-pressureon the top of the diaphragm in the casing E2 will preponderate and holdthe valve E1 open, and the extension of the valve-stem forces down thediaphragm E1i more or less. As soon as the said neck or the tubeconnected therewith is closed the equilibrium is established and theexternal air-pressure, acting on the diaphragm E11, presses the valve E1instantly, and thus suction is cut oi'f from all mechanism connectedwith the casing E2 or suction-tubes connected therewith, and allmechanisms del/wending on such suction do not and cannot be operateduntil the valve E1 is again open, excepting' the tube E1, as this tubeis connected with the suction-tube E11 in advance of the valve-casingE2.

rl1he tube F, having a controlling-cock F2, conducts compressed air fromthe tube D15 to the compressed-air motor F, which maybe of any approvedconstruction. By means of on its seat IOC IIO

suitable connections the motor F rotates the belt-pulley F3, mountedloosely on the shaft F4, projecting from an upright partition G. Adriving-belt F5 passes over the pulley FJ and over a pulley F, mountedloosely on a shaft F7, also mounted in the partition G and abracket-frame G' on the same. The pulley F1 has fixed to it a pinion F8and a peripherally-grooved collar F9 for receiving the rim of a diskF10, fixed on the end of a rod F11, guided in the bracket frame G tomove lengthwise. The playing-roll H, on which the note-sheet ct isrolled while playing, is supported at one end and rotated by a shortshaft G3, mounted in the partition G and bracket-frame G, and this shaftGs carries a loosely-mounted cog-Wheel G1, which is engaged with thepinion FS, and to the said cogwheel a peripherally-grooved collar G5 isattached, into the groove of which the rim of the disk F10 also extends.The collar G5 is provided on its outer face with a clutch-pin GG, whichcan engage a clutch-pin G'T on a disk G8, fixed on the shaft G3. Thepulley F is provided on its outer face with a clutch-pin G, which canengage a clutchpin G10 on the hub of a belt-pulley G11, mounted on theshaft F7. A driving-belt G12 is passed over the pulley G11 and over thepulley G14, Iixed on the short shaft G13, mounted in the partition G andserving to support one end of and to rotate the music-roll I, from whichthe note-sheet is unrolled for playing. The pulley F4 is constantlyrotated and when pushed to the right, so that the clutch-pins GJ and G10engage, rotate the pulley G11 at high speed, and the played note-sheetis rerolled at high speed back upon its original roller l, from which itwas unrolled while playing. XVhen the pulley F is shifted to the left,Fig. 8, so that the clutch-pins GU and G7 are engaged, the shaft GS isrotated at a much-reduced speed,as motion is transmitted from the pulleyF1S to the shaft G3 by means of the pinion F8 on the driving-shaft andthe cog-wheel G1 on the driven shaft. The notesheet a is thus rolled atordinary playing speed upon the roller I-I, driven by the shaft G3. Therod F11 is pivoted to the upper end of an upwardly-projecting arm J of arocl bar J, mounted on an arm J2 on the upper end of a standard J3.Below each end of said rock-bar a pneumatic mechanism J1 or J5 is iixedin such a manner that the rods A2 of said pneumatic mechanisms can beforced upward, and thus force either end of said rockbar J upward. Byoperating one or the other of said pneumatic mechanisms the rod F11 isshifted lengthwise in one direction or the other, and thus the roller Hor l thrown in gear with the motor for moving the note-sheet a in onedirection or the other. As shownin Fig. '7, the pneumatic mechanisms J1and J5 are connected with a compressed-air chamber J13 and arareiied-air chamber J7. A suction-tube b extends from the valvemechanism of the pneumatic mechanism J1to a cock JS, (market reroll inFig. 1,) and a branch tube b' extends from the tube b to a hole in thetracker-bar O, as is also shown in Fig. l. A tube b2 extends from thevalve mechanism of the pneumatic mechanism J 5 to the tubular bearing HGof the roll H, which bearing will be described in detail later on. Ar0cking bar L is connected by the sleeve L' with the rocking bar J so asto rock with it, the bar L being shorter than the bar J. Below the endsof the bar L valve-casings M and N are located, which are connected bythe tubes d2 and e2 with the valve-casin gs D2 and E2, respectively. Thecasing M contains a downwardly-seating puppet-valve F having a stem M"2projecting from the top of the casing M. The valve M' is pressed fromits seat by a spring Mwhich automatically opens orlifts the valve. Aduct M4 extends from above the valve-seat to the surface of the casing,and through it air can enter the casing when the valve is raised. Thecasin g N contains an upwardly-seatin g puppet-valve N',having a stem N2projecting from the top of the casing N. The valve N is pressed upwardagainst its seat by a spring N2, which automatically closes said valve.A duct N1 extends from above the valve-seat to the surface of thecasing, and through it air can enter the casing when the valve is open.Both valves h and N are open at the same time or closed at the sametime. W'hen the right-hand end of the bar L swings down, it closes thevalve M' and permits the valve N' to close, and when the lefthand endswings down it opens the valve l and permits the valve M to open.

The tracker-bar O has a slightly-convexed top and is provided with a rowof ducts f, which are connected with the various tubes leading to thevarious valve mechanisms.` Each duct f is connected by a duct g with achamber 0 in the tracker-bar, and each duct g can be adjusted in sizebya screw O2. Six of the ducts f are connected with ducts 71 extendingto the face of the tracker-bar O, as shown in Figs. l0 and 11, and thesesix ducts are connected with tubes m, leading to the six controllers K.A bar Pis guided to slide lengthwise on the face of the tracker-bar byscrews P', passed through longitudinal slots P2 in the bar Pinto thefront of the trackerbar. SpringsP, surrounding the screws P2, press thesaid bar P against the front of the tracker-bar. The bar P has six holes.7',which can register with the six ducts 7L in one position of the barP. One end of the sliding bar l is connected with a rod P1, which at itsother end is pivoted to a lever P5, pivoted to the bracket-frame G', andwhich has its lower end pivoted to one end of a rod P, the opposite endof which is pivoted to an upwardlyextending arm P7 of a rock-bar PS,pivoted to the standard J3. A pneumatic mechanism l9 is fixed under eachend of the rockbar PS in such a manner that its rod A2 can be forcedupward to lift one end of the bar P11. The pneumatic mechanisms P1 areconnected IOO IIO

vH by a spring H7 in the tube HG.

with the compressed-air chamber J" and with the rareed-air chamber P10.rlubes 7tt extend :from the valve mechanisms of the pneumatic mechanismsP to the tracker-bar O. The tube K, connecting the rareiied-air chambeiIP10 with the suction-tubes K2, is provided with a shut-ott cock K2. Thechamber O/ in the tracker-baris connected by two tubes Oi with a tubeO2, connected with the casing of a three-way cock O4, which is connectedby the tube 0"Y with the suction-tube K2 and by the tube O7 with thecompressed-air tube D. When the three-way cock O1 is in the positionshown in Fig. 12, the airis being constantly drawn out of the chamber Oand the ducts and the tubes connected therewith, and when the cock isturned half-way around the communication with the suction-tube isdestroyed and communication established with the compressed-air tube D.The strong current produced forces the accumulated dust out of thechamber O and the ducts f, g, and 7i.

The roller H has a bore H' extending i'rom its center to one end and aduct H2 extending from the inner end of said duct H' to the surface ofthe roller. The bore H extends also through the bearing-socket H3 on theend of the roller H and can communicate with the bore H4 of a tubularbearing-pintle H5, mounted to slide lengthwise in a short tube HG in thepartition G2. The tubular piutle H5 is pressed toward the end of theroller The tube b2 is connected with the outer end of the tube H2,connected with the bearingpintle H5. The six ductsfin the tracker-bar,which are connected with the ductsj, are also connected, as stated, bytubes m with six accentuationcontrollers K', which in turn are connectedby suitable tubes B6 with the several pneumatic operating mechanisms forthe keystrikers. The details of the controllers and accentuatingmechanism form no part of the present invention, and hence will not bedescribed in detail. The roller I has a similar spring-bearing l in thepartition G2.

A compressed-air chamber R is connected by a tube R with the tube D15,and with said chamber R three pneumatic mechanisms R2, R2, and ltl areconnected. The pneumatic mechanisms R2 and R2 serve for operating therods R5 and R6, which depress the piano and forte pedals. A spring-latchR9 automatically locks the rod R5 in lowered position with thepiano-pedal depressed, and the automatic mechanism R4 serves forwithdrawing the latch R2 at the proper time to permit the spring limonthe rod R5 to throw the same upward. From each of the pneumaticmechanisms R2 R2 R1 a tube n extends to the tracker-board O, and thetube n, connected with the pneumatic mechanism R2, has a threeway cockQ, which can be adjusted to shut oit by hand the tube 'n from thetracker-board and keep it open to the atmosphere. As long as this cockis held open to the atmosphere the pneumatic mechanism Ri1 holds thefortepedal depressed. lVhen the cock Q is adj usted to open the saidtube n to the trackerboard, the said forte-pedal is only depressed, whena hole in the note-sheet a registers with 'that duct iu thetracker-board that is connected with the said tube n. A cock S extendsthrough all the six tubes m, so that by turning said cock these sixtubes can be closed to the tracker-board and will be cut out entirely,as far as any effect of the note-sheet is concerned. Each of said tubesm has a threeway cock S', onlyoue of which is shown, and by means ofthese cocks each tube can be opened by hand to theouter air, and thusthe controllers K', connected with these tubes m, having lthe three-waycocks opened, will be constantly operative independent of any holes inthe note-sheet. By these means a player can accentuate the music playedindependently of the accentuating-holes in the note-sheet and accordingto his own tastes and inclinations.

A bar T is hinged at one end to the trackerboard O to extend lengthwiseover the same and over the note-sheet, and on this bar the designationsof the notes, tc., to which the various ducts j" pertain are marked.

The operation is as follows: A note-sheet a, rolled on a roller I, isplaced in its bearingsthat is, the end of the shaft G12 and the bearingl in the partition G2. The sheet a is passed over the tracker-bar andits end secured on stud V on the roller H. The cock NV in the tube d2 isin the position Stop, and the said tube is now open to the atmosphere,and consequently the valve D7 in the casing D2 is closed, and nocompressed air can pass to the motor F or any compressedair chamber orany pneumatic mechanism. The roller H is in gear with the motor, and theleft-hand end of the rock-bar J is lowered and the right-hand raised.The valves M1 and N are open. To start the instrument, the cock W ismoved to the left (Play) and is thus closed, permitting the valve D7 toopen, as previously explained, and to admit compressed air to the motorF, compressed-air chambers, and at proper times-that is, when thecorresponding valve mechanisms are operated-to the pneumatic mechanisms.The note-sheet ais now rolled on the roller H and closes the duct H2 inthe same and as the note-holes in the note-sheets pass over the ductsfinthe tracker-bar 0 permit air to pass to the valve mechanisms, as shownin Fig. 2, as the valve E1 is held open as the tube c2, connected withthe casing E2, is held open by the lever L, permitting the pressure onthe top of the diaphragm in the casing E2 to press down the valve E4.Thereby the corresponding valves A1" are opened, and thus compressed airis admitted to the corresponding pneumatic mechanisms and the keys arestruck, and so on until the end oi' the tune is reached, at which time ahole in the notoshect ct registers with that tracker-bar duct j" IOO IIO

connected with the tube b', and thus the pneumatic mechanism J 4 isoperated, and the rockbar J is thrown into the position shown in Fig. 6.Thereby the roller I or rerollingroller is thrown in gear With the motorF, and the sheet is unrolled from the roller H upon the original rollerI. At the same time that the gear is reversed the valve N is closed, andthe valve M is also closed. By the closing of the valve N the valve E4in the casing E2 is closed in the manner previously described, and thusthe suction cut off from all the valve mechanisms, excepting themechanisms Jl J5, by means of the tube El, as such mechanisms J4 J5 areconnected by the tube E1G With the suction tube E3 in advance of thevalve-casing E2. The closing of the valve M has no effect, as the tubed2 has already been closed by the cock W. All parts remain in thisposition until the notesheet a is entirely rerolled on the roller I.When the end of the note-sheet uncovers the duct H2 in the roller H, aircan pass through the ducts H H2 in the roller H and the tube h2 into thepneumatic mechanism J5. Thereby the rollerv I is thrown out of gear, theroller H in gear, the valve N is opened, and the valve M is also opened.The opening of the valve N causes the opening of the valve E4 in thecasing E2, and all valve mechanisms are again connected With the suctiondevice. The opening of the valve M has no effect, as the tube cl2isstill closed by the cock W. The note-sheet t is thus alternatelyunrolled from and rolled upon the roller H, and While the sheet is beingrolled upon the roller H the valves of the pneumatic mechanisms can beoperated, as they are connected With the suction device, and thus theinstrument can play; but When the sheet is being unrolled from theroller H-that is, rerolled upon the roller I the valve mechanisms arecut out from the suction device, and the instrument does not play. Thisrolling and reroll'ing continues until the cock W is turned to right,whereby the tube CZ2is opened. As its end is held open by the valve Mduring playing, the instrument stops at once. If the valveW is turned toStop While a melody is being played the sheet and other parts retain thepositions they had at the time the cock W was turned. If, however, thecock W is turned to Stop While the note-sheet is being rerolled upon theroller I, the instrument does not stop until the sheet is entirelyrerolled upon the roller I, for the reason that as soon as suchrerolling begins the valve h closes the tube cl2, and thus the openingof the cock W has no effect. When the sheet is entirely rerolled, theduct H2 iu the roller H is uncovered, and the air entering through thesame causes a reversing of the rock-bar L by means of the pneumaticmechanism, the valve h is raised, and the end of the tube d2 opened, andthe instrument is stopped. A fresh music-roll can be inserted and theinstrument again started by the turning of the cock IV to Play therebyclosing the tube cl2, the end of which is held open by the valve hWhenever it is desired or necessary to reroll the sheet a after agreater or less part of it has been played, the reroll-cock JS is openedto the atmosphere. Thereby the pneumatic mechanism J 4 is operated andthrows the rock-bar J into the position shown in Fig. G and thererolling-roll in gear. The valves of the several pneumatic mechanismsare not operated now, as the valve N has been closed, the valve E4 alsoclosed, and the suction requisite for the operating of these valvemechanisms has been cutoff. As soon as the sheet is entirely rerolledthe rolling-gear is reversed autom atically,as stat-ed. The valves N' E4are thereby opened and the instrument begins to play again unless thecock YV has been turned to Stop-that is, the tube d2 thereby opened.Vhenever certain passages or parts are to be automatically accentuatedindependently of or with the effect of the forte or piano pedals,the barP must be shifted to bring the six holesj in the same to register withthe six ducts lz. Thereby all the six controllers K' will be thrown inand remain active as long as the bar Pisin this position. Vhen this saideffect is no longer desired, the bar P must be shifted to close theducts 7L, as shown in Fig. ll. The said bar is shifted by means of thepneumatic mechanisms P, from which the tubes l'y 7a extend, to ducts j"in the tracker-bar, the note-sheet having corresponding holes. The sameeffect can be produced manually by means of the three- Way cocks S inthe several tubes m, as has been stated. If desired,` the tube o insteadof leading to a duct in the tracker-bar may be connected with a hollowbearing for the roller I, like the bearing for one end of the roller H,the roller I havingducts corresponding to the ducts H H2 in the rollerI-I.

With the modified construction shown in Fig. 13 the sliding plate P andmeans for operating the same are dispensed with and the short ducts 7Lin the tracker-board O are not provided. The pneumatic mechanisms l?"can act on the rocking bar P3 in the manner previously described to rockthe same. A valve-plug U forms the pivot of the rocking bar PS and ntswithin a casing U. The six tubes B10, branching from the tubes B6leading to the controllers K, lead to the casing U and are continued atthe other side of the casing, as at U2, this continuation having openends The plugUhas six transverse bores U4, which When the plug is in oneposition establish communication between the ends of the tubes B10 inthe casing U and the open continuations U2 of said tubes B10. In theother position of the plug this communication is interrupted. I/Vhen allnotes are to be accentuated-that is, played with more :force-a hole isso arranged in the musicsheet that at the proper time one of thepneumatic mechanisms P2 throws the rock-bar PS in such position as toestablish communica- IOO IIO

tion between the tubes B10 and their continuations U2, so thatatmospheric air can pass to all the controllers, whereby the valves ot`all the pneumatic key mechanisms are so actuated as to admit morecompressed air t0 each pneumatic key mechanism. tVhen this accentuationis t-o cease, another hole in the note-sheet causes pneumatic mechanismP to throw the rocking barPS the other way, and thereby all tubes B10are closed and any one note can be accentuated from the trackerboard inthe mannerpreviousiy described. In the construction shown in Fig. 13 thevalvecasings M and N and the valves therein are omitted and the tubes(Z2 and e2 extend to a casing V, in which a plug V is mounted to rockaxially, which plug is attached to the rock-bar .I and forms a pivot forthe same. The plug V has two transverse d ucts V2,which can establishcommunication between those ends of the tubes d2 c2 in the casing V andcontinuations e o of the tubes at the other side ot the casing, whichcontinuations are open at their outer ends. For one position of therock-bar .I both tubes (Z2 e2 are open, and for the other they are bothclosed. The eitect of opening or closing both tribes (Z2 and cL is thesame as that previously described.

Having described my invention, what I claim as new, and desire to secureby Iietters Patent, is-

l. In a sel t-playing attachment for musical instruments, thecombination with a notesheet-rolling mechanism, of a reversing-gear forsaid sheet-rolling mechanism, pneumatic mechanism t'or operating thereversing-gear and means for controlling the pneumatic mechanism from aroller ot the sheet-rolling mechanism, substantially as herein shown anddescribed.

v2. In a self-playing attachment for musical instruments, thecombination with a notesheet-rolling mechanism, of a reversiug-gear forsaid sheet-rolling mechanism, pneumatic mechanism for operating thereversing-gear and means for pneumatically controlling thereversing-gear from a roller of the sheet-rolling mechanism,substantially as herein shown and described.

3. In a self-playing attachment for musical instruments, the combinationwith a notesheet-rolling mechanism, of a driving-gear, a reversing-gearand means for controlling the reversing-gear pneumatically from a rollerof the sheet-rolling mechanism, substantially as herein shown anddescribed.

4. In a self-playing attachment for musical instruments, the combinationwith a notesheet-rolling mechanism, of a driving-gear, a reversing-gear,pneumatic mechanism for operating the reversing-gear and means forpneumatically controlling said reversing-gear from a roller of thesheet-rolling mechanism Aby the nnroiling of the sheet, substantially asherein shown and described.

5. In a self-playing attachment for musical instruments, the combinationwith two note-- masse sheet rollers, one of said rollers having a ductextending' from one end of said roller to the surface of thc'roller, adriving-gear, a reversing-gear, pneumatic mechanism for operating thereversing-gear, and a pneumatic connection between the said pneumaticmechanism and the said duct in the roller, substantially as herein shownand described.

G. In a self-playing attachment for musical instruments, the combinationwith two notesheet rollers, one of said rollers having a duct extending`from one end to the surface of the roller, a tubular bearing for thatend of the roller having the duct, a driving-gear, a reversing-gear,pneumatic mechanism for operating the reversing-gear and a pneumaticconnection between the said tubular bearing and the pneumatic mechanismfor operating the reversing-gear, substantially as herein shown anddescribed.

7. In a self-playing attachment for musical instruments, the combinationwith two notesheet rollers, one of said rollers having a duct extendingfrom one end to the surface of the roller, a spring-pressed tubularbearing for that end of the roller having the duct, a driving-gear, areversing-gear, pneumatic mech* anism for operating the reversing-gearand a pneumatic connection between the said tubular bearing and thepneumatic mechanism for operating the reversing-gear, substantially asherein shown and described.

S. In a self-playing attachment for musical instruments, the combinationwith two notesheet rollers, one ot said rollers having a duct extendingfrom one end to the surface of the roller, a tubular spring-pressedbearing for one end of the said roller,a rotative bearing for the otherend, a driving-gear, a reversinggear, pneumatic mechanism for operatingthe reversing-gear and a pneumatic connection between the saidtubulaibearing and the pneumatic mechanism for operating thereversing-gear, substantially as herein shown and described.

9. In a selfeplaying attachment for musical instruments, the combinationwith a notesheet-rolling mechanism, of a driving-geari'or this rollingmechanism,a compressed-air-conducting tube, a valve in said tube, asuctiontube, a valve in said suction-tube, a revers'- iug--gear for therolling mechanism, means operated with said reversing-gear forcontrolling the valves in the compressed-air tube and suction tubes andpneumatic mechanisms connected with said compressed-air tube andsuction-tube, substantially as herein shown and described.

l0. In a self-playing attachment for ninsicai instruments,thecombination with anotesheet-rolling mechanism, of a driving-gearfor thisrolling mechanism, a compressed air tube, a valve in the same, asuction-tube, a valve in the same, a separate tube connected with thecasing of each of said valves, a controlling-valve in the end of each ofsaid tubes, a reversing-gear for the roller-driving mech- IIO anism,means connected with the reversinggear for actuating the valve in theends of the said tubes and pneumatic mechanisms connected with the compressed-air tube and the suction-tube, substantially as herein shown anddescribed.

11. In a self-playing attachment for musical instruments the combinationwith a series of pneumatic mechanisms to be actuated by compressed air,of a valve on each pneumatic mechanism, means for moving said valves bysuction, a compressed-airconducting tube, connected with the pneumaticmechanisms, a suction-tube connected with the valve mechanisms of saidpneumatic mechanisms, avalvein the suction-tube, a Valve in the compressed-air-condu cting tube, a note-sheetmoving mechanism, adriving-gear for the same, a reversing-gear and means connected with thereversing-gear for controlling the valves in the suction-tube and in thecompressed-air-conducting tube, while reversing, substantially as hereinshown and described.

12. In a self-playing attachment for musical instruments the combinationwith a tracker-bar having du cts and a chamber connected with each duct,of a tube extending to said chamber, a suction-tube and a compressed-airtube and a three-way cock connecting the tube extending to said chamberwith the suction-tube and the compressed-air tube, substantially asherein shown and described.

13. In a self-playing attachment for musical instruments, thecombination with a tracker-bar having ducts and a chamber connected withsaid ducts, of means of drawing air from said chamber and means forconducting compressed air into said chamber, substantially as hereinshown and described.

14. In a self-playing attachment for musical instruments, thecombination with a tracker-bar having ducts, of tubes connected with theducts, a three-way cock connected with each of a series of suchtubes andmeans in such tubes, between the ends of trackerboard d ucts and thethree-way cocks for closing such duet or tube connected therewith,substantially as herein shown and described.

15. In a self-playing attachment for musical instruments, thecombination with a tracker bar having duets, and additional ductsextending from the `lirst mentioned ducts, means for opening and closingsaid additional du cts automatically, substantially as herein shown anddescribed.

1G. In a self-playing attachment for musical instruments, thecombination with a tracker-bar having d ucts and additional ductsextending' from the first-mentioned ducts, of means for opening andclosing said additional ducts automatically by a note-sheet moved overthe tracker-bar, substantially as herein shown and described.

17. In a self-playing attachment for musical instruments, thecombination with a pedal-operating bar, of a pneumatic mechanism foroperating` said bar, a tracker-bar, a tube extending from the saidpneumatic mechanism to the tracker-bar and a three -way cock in saidtube, substantially as herein shown and described.

1S. In a self-playing attachment 'for musical instruments, thecombination with a series of pneumatic mechanisms to be operated bycompressed air, of Valve mechanisms for said pneumatic mechanisms, meansfor operating said valves by suction, a compressedair-conducting tube, avalve-casing connected with said tube, a valve in said casingcontrolling said compressed-air-conducting tube, a suction-tube, a valvecasing connected therewith, a valve in the same controlling thesuction-tube, a note-sheet-rolling mechanism, a reversing-gear for thesame, a tube connected with the valve-casing of the com* pressed-airtube, a tube connected with the valve-casing of the suctiontube andmeans for opening or closing said two tubes together autcmatically,whichmeans are operated with the reversing-gear, substantially as hereinshown and described.

Signed at New York city, in the county of New York and State of NewYork, this 9th day of March, A.. D. 1901.

HARRY M. SALYER.

Witnesses:

@scan F. GUNZ, N. M. FLANNERY.

